Bloch-point-mediated topological transformations of magnetic domain walls in cylindrical nanowires

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autorinnen und Autoren: Wartelle A, Trapp B, Stano M, Thirion C, Bochmann S, Bachmann J, Foerster M, Aballe L, Mentos TO, Locatelli A, Sala A, Cagnon L, Toussaint JC, Fruchart O
Zeitschrift: Physical Review B
Verlag: AMER PHYSICAL SOC
Jahr der Veröffentlichung: 2019
Band: 99
Heftnummer: 2
ISSN: 2469-9950


Abstract

Cylindrical nanowires made of soft magnetic materials, in contrast to thin strips, host domain walls of two distinct topologies. Following 15 years of theoretical predictions of the unique dynamic features of such walls, such as absence of Walker breakdown, we report on experiments here. Unexpectedly, we evidence the dynamic transformation of topology upon wall motion above a field threshold, a phenomenon that had been previously overlooked. Micromagnetic simulations highlight the underlying phenomenon for one type of transformation, involving the nucleation of a Bloch-point singularity. This calls for reexamining existing predictions, and further experiments to highlight the conditions favoring the transformation.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Bachmann, Julien Prof.
Lehrstuhl für Chemistry of thin film materials
Bochmann, Sebastian Dr.
Lehrstuhl für Chemistry of thin film materials


Einrichtungen weiterer Autorinnen und Autoren

CELLS
Elettra Sincrotrone Trieste S.C.p.A.
University of Grenoble Alpes (UGA) / Université de Grenoble


Zitierweisen

APA:
Wartelle, A., Trapp, B., Stano, M., Thirion, C., Bochmann, S., Bachmann, J.,... Fruchart, O. (2019). Bloch-point-mediated topological transformations of magnetic domain walls in cylindrical nanowires. Physical Review B, 99(2). https://dx.doi.org/10.1103/PhysRevB.99.024433

MLA:
Wartelle, A., et al. "Bloch-point-mediated topological transformations of magnetic domain walls in cylindrical nanowires." Physical Review B 99.2 (2019).

BibTeX: 

Zuletzt aktualisiert 2019-08-04 um 12:38